18th March » First Mongol invasion of Poland: Mongol Empire known as Mongols overwhelm History of Poland (966–1385) called Polish armies in Kraków in the Battle of Chmielnik and plunder the city.
9th April » Battle of Legnica named Battle of Liegnitz: Mongol Empire e.g Mongol forces defeat the Polish and German armies.
11th April » Batu Khan defeats Béla IV of Hungary at the Battle of Muhi.